Traumatic Bilateral Posterior Fracture-Dislocation of Shoulders

Abstract

Bilateral posterior fracture-dislocation of shoulders (BPFDS) is a rare injury and is most commonly sustained after epileptic seizure, extreme trauma or electrocution. A unique case of isolated BPFDS as a result of a fall from a bicycle in a healthy young man is presented. Unilateral posterior fracture-dislocation of the shoulder as a result of trauma is rare and such an injury occurring bilaterally is yet to be reported in the literature. BPFDS is associated with rotator cuff tears, reverse Hill-Sachs lesion and posterior labrum injuries. BPFDS if not treated promptly can lead to avascular necrosis of the head of humerus. Diagnosis of BPFDS is difficult and if there is any suspicion on the plain films, CT or MRI scans should be performed to confirm the diagnosis and define any associated injuries.